William a



UNITED STATES PATE T rrrct WILLIAM A. MoOALLUM, OF CINCINNATI, OHIO, ASSIGNOR TO oIIARLEs ANDREW, oI SAME PLACE.

MQACHIINE FOR JOIN -mo ,TUBES.

' S PEQIFIGATIQN forming part of Letters Patent No. 603,337, dated May 3, 1898;

Application filed October 15, 1896. Serial No. 609,010. (No model.) I

T or whom it may concern.-

Be it known that I, WILLIAM A. McOAL- LUM, a citizen of the United States, residing at Cincinnati, Ohio, have invented new and useful Improvements in Machine's for' Jointing Tubes, of which the following is a specification.

My invention relates to machines for jointing metal tubing,its object being to produce a machine for the convenient and expeditious manufacture of tubular posts by compressing an outer tube upon an inner one, into which 7 it is telescoped at the zone of the lap.

To this end 'my invention consists in the machine constructed and operating as hereinafter set forth, embodying generallya bedframe, a central cross-head adaptedto move bodied therein will be more specifically described, and set forth in the claims.

Mechanism embodyingmy invention is illustratedin the accompanying drawings, in

which- Figure 1 is'a side elevation of the machine, complete, omitting the hydraulic" forcing pump; Fig. 2, a-plan view of the same; Fig. 5

3, an end elevation of same, showing one of the plunger connections with the'draw-bars Fig.

4.,an axial cross-section of the die-withdrawing cylinder and its supplemental cylinder and plunger; Fig. 5, a cross-section of the machine, showing one of the supporting-rollers; Fig. 6, an end elevation,- and Fig. 7 a cross section of the die-carryingcross-head.

Referring now to the drawings, A A designate two parallel I-beams resting upon crossties a, suitably spaced apart to constitute a bed-frame for the machine.

Upon the bed- 1 frame near one end is firmly bolted a hydraulic cylinder-B, with plunger b arranged to movei outwardly,andat the opposite end of the frame is a similar cylinder 0, withplunger c moving outward oppositely to the first, the cylinder 0 being adjustably secured to thebedframe, as by a hook or yoke L. Outwardly the plungers b and 0 each engage movable blocks D, provided with rollers r to move upon the ways A A of the bed-frame. The opposite blocks D are connected by parallel draw-bars 01' d passing outside the cylinders B in the horizontal plane of their axes above the ways A A At an intermediate point between the cylinders B O the draw-bars d d connect with the cross-head E, arranged to reciprocate upon the bed-frame as impelled by the plungers b c alternately. The cross-head E is of the form indicated in the figures, provided with rollers r, supporting it upon the ways A A and with a central recess adapting it to receive and carry a hollow die F, a series of interchangeable dies being provided adapted'to the different sizes of'pipe to be operated upon. The dies F are solid. blocks preferably of steel, each of rectangular or other external form, adapted to fit in the recess of the Cross head E (whereby it is carried and operated in relation to the tubes acted upon) and provided with an aperture of the diameter re quired to engage and act upon the tubes.

The cross-head E is attached to the drawbars (1 d by its wings e, having side recesses 6, through which the draw-bars pass and are secured by keys e suitable engaging holes 6 being provided in the draw-bars at proper intervals to adjust the cross-head to any desired position in relation thereto.

The cylinders B C are permanently closed at their inner ends and are open attheir outer ends and fitted with close-fitting plungers b 0, provided with cup-leather packings in the usual manner.

- The further construction and the functions of the several parts will appear in connection with the mode of operation, which is as fol lows: The plunger of the main operating-cylinder B being in its receded position,the larger tube T of the tubes to be jointed is placed between the draw-bars d dtupon'suitablyprovided supporting-roll R, with one end abuttedagainst the rear end of the cylinder B and the other adjacent to and in line with the opening of the compression-die F. The smaller of the tubes T is then placed in a relatively similar position in the extended axis of the first, one end being passed through the com pression-die F and telescoped within the larger tube T the distance of the desired lap and the other end adjacent to the rear end of the cylinder O being likewise supported upon rolls R from the ways A A The driving-pu mp (not shown herein) is then set in operation and water forced through the pipes 1) (indicated by dotted lines in Fig. 1) into the cylinder B, moving its plungerb outward and drawing the cross-head E in the same direction, whereby the compression-die F is drawn inward upon the end of the tube l",compressing it centripetally upon the tube T and at the same time upsetting it longitudinally to some extent. \Vhen the die has reached the limit of the desired zone of compression, a valve, as .e', controlling the flow to the cylinder B, is closed and one, as y, con trolling the flow to the cylinder 0, is opened. The cylinder 0 has a short rear extension 0, fitted with a short supplemental plunger 0'' moving rearward. An aperture 0, through the wall separating the two cylinders, admits the water to the two plungers simultaneously, but the smaller one having less resistance is first moved rearward until it comes into contact with the end of the tube Tithus forming a take-up to accommodate any lost motion and constitute an abutment for the smaller tube. The pressure of water then moves the plunger c outward, carrying the cross-head E backward and stripping the die from the tube T. By pressure of the supplemental plunger c the post formed by the now united tubes T T is held firmly in position between the said supplemental plunger and the cylinder B while the plunger 0 is operating. lVhen the compression is complete and the die receded from the zone of lap, the composite tube T T is lifted out of the machine with the die F still upon it, the latter supported by a hook a; from a traveling crane (not shown) and slipped off the end of the tubes and again replaced in its containing cross-head for a new operation.

By readjustment of the cylinder C and the cross-head E to new positions upon the bedframe and new relations with the draw-bars to accommodate new lengths of pipe and placing a new die in the cross-head to accommodate tubes of different diameter posts of any desired size can be made by the machine.

I claim as my invention and desire to secure by Letters Patent of the United States 1. In a tube-jointing machine embodying a longitudinally-extended bed or frame, operating-cylindcrs at or near the outer ends thereof, having plungers operating outwardly in opposite directions, draw bars connecting said plungers, and a com pression-die movable upon the bed or frame between the cylinders byattachment to the draw-bars, substantially as set forth.

2. In a tube'jointing machine, of the character indicated, the combination of a bedframe, a fixed operating-cylinder at or near one end thereof, an adjustable withdrawingcylinder at or near the opposite end thereof, draw-bars connecting the plungers of the cylinders, and an intermediate cross-head adapted to be attached ad justably to and be reciprocated by the draw-bars, and a hollow compression-die carried by the cross-head, substantially as set forth.

3. In a tube-jointing machine, of the character indicated, in combination with the bedframe, operating and withdrawing cylinders, the draw-bars and intermediate cross-head, a supplemental cylinder and plunger in connection with the withdrawing-cylinder, said plunger acting as an adjustable backing for the tube under treatment, substantially as set forth.

4. In a tube-jointing machine, the combination of the bed-frame, opcrating-cylinders, draw-bars and cross-head, the intervening removable carrying-rolls in bearings attached to the bed-frame, substantially as set forth.

5. In a tube-jointing machine of the character indicated, the combination of the bedframe; oppositely-acting cylinders attached thereto; cross-heads attached to the plungers of the cylinders and moved upon the bedframe as a support; draw-bars connecting the cross-heads; and a central cross-head or diecarrier adjustably attached to the draw-bars, substantially as set forth.

6. In a tube-jointing machine, of the character indicated, the combination of the opposite cylinders, bed-frame, draw-bars, and the cross-head or die-carrier adj ustably attached to the draw-bars, and an annular die carried by said cross-head, substantially as set forth.

7. In a tube-jointing machine, of the character indicated, the combination of the bedframe, opposite cylinders, draw-bars, and the intermediate cross-head adapted to move upon the bed frame, and provided with lateral wings provided with slots to receive the drawbars, and removable pins connecting the same with the cross-head at any desired points, and an annular die carried by said intermediate cross-head, substantially as set forth.

8. In a tube-jointing machine of the character indicated in combination with the motor-cylinders for operating the die, a supplemental cylinder and plunger located at the back of the motor-cylinder with a perforated partition between the two and a take-up plunger operated by said supplemental cylinder against the end of the tube under treatment, to engage the same and accommodate any variations of length, substantially as set forth.

9. In a tube-jointing machine, the combination of the bed-frame, the opposite operating and withdrawing cylinders, the crossheads and connections, andapipe connecting the two cylinders, provided with two controlling-valves, and a supply connection entering between said valves, substantially as set forth.

10. In a tube-jointing machine of the character indicated, the cross-head or die-carrier constructed with an open vertical slot or my hand in the presence of two subscribing socket for the insertion of dies and with latwitnesses. eral wings for connection with the draw-bars, and. with bearing-rolls for support and guid- WVILLIAM MCCALLUM' 5 ance upon the bed-frame, substantially as set Witnesses:

forth L. M. HOSEA,

In testimony whereof I have hereunto set JAMES L. FOLEY. 

